[h0ughy (David)]

Originally Posted by batema

Hi,
I have a nine year old C8 and the internal measurement where the tube cap fits on is approx 22.6 cm. This is measured from the inside to inside lens cap cover. From outside to outside you are looking at approx 23cm and length from front to back of OTA is approx 43cm ans to the end of the diagonal that came standard with the scope os 54cm. Hope this helps
Mark

thanks Mark it certainly helps - just drafting up something here at work